Fix O(n**2) performance problem in socket._fileobject

as both < and > than eachother.

possible to update the lineno attribute of the current frame.

library came from that it matches.

Remove the former apache license text now that its been contributed to PSF to
avoid confusion.

Improved PanedWindow.add's docstring. 'subcomand' is a Tcl term, and the possible options and values are the same accepted by paneconfigure (not configure).

an fd is registered twice, and add some additional epoll tests.  Patch
by Christian Heimes.

tries to read *.pth files on interpreter startup.

regression tests in parallel, shortening the total runtime.

the various profiling modules (profile, cProfile). Patch by Hagen Fürstenau.

command name even when executable is specified.

-Wall -Wstrict-prototypes -Werror" in both --with-pydebug mode and --without.
There's still a batch of non-prototype warnings in Xlib.h that I don't know how
to fix.